Surprising Parallels Found Between Solar Activity And Hurricane Development

Cat 5 Hurricane “Dorian” showed a development parallel to a solar storm lasting several days, which reached the earth from 27 August to 4 September 2019.

By Snowfan

The strength of particle radiation of a solar storm is given as a three-hour value in the Kp index, the daily value is called the A index.

The following table shows the development of hurricane DORIAN compared to solar activity in the daily values of the A index.


The parallels are astonishing: It would seem DORIAN was “fed” by the strength of the solar storm in its development, especially in its peak around September 1, 2019.

It’s well known, of course: correlation isn’t causation.

So the question arises: How could solar storms influence earthly hurricanes? And the question certainly cannot be vice versa.

A commentator made the following interesting comments on hurricane activity in 2017 (including IRMA), and 2018 in the North Atlantic and a connection of solar activity with regard to changes in the jet stream:

Interesting sequence of events here; July 9/10 we had a sharp ‘Kp’ impact after a prolonged period of quiet.
On July 11th, TS Barry had been activated, by the end of the week we had the Jet Stream phenomenon, first over the pacific then over US states.
The theory is that a burst of ‘Kp’ activity expands upper atmosphere and triggers profile changes which can activate or exacerbate potential or base line activity lower down in the atmosphere.
Science in this area is in its infancy; however a discussion of what is involved can be seen at

This is also an impressive parallel development of hurricane “IRMA” (Cat. 5) and the solar storm in September 2017:

IRMA– Recorded peak intensity and (below) overall progress


The influence of solar activity on the Earth’s weather, e.g. sudden stratospheric warming in the winter over the Arctic with violent “Arctic outbreaks” in the mid-latitudes, is already well known.

Why shouldn’t solar activity also have a significant influence on the formation and development of cyclones through solar storms over the stratosphere and the jet stream?

An important and meaningful field of research, in my opinion…, and far more meaningful than the demonization of the life-giving CO2 in our atmosphere, with the aim of pulling money out of people’s pockets with a CO2 tax….

By the way: The solar activity also influences ENSO – NASA sees the globally cooling La Niña from November 2019 on…

The current NASA-ENSO forecast from September 2019 shows globally cooling Lan Niña conditions with SSTA of at least -0.5 K and colder in the relevant Nino area 3.4 as early as October/November 2019. Dr. Horst Malberg describes the relationship between ENSO conditions and sunspot cycles here. Source: NASA-GMAO-ENSO-Model

Snowfan 2015

18 responses to “Surprising Parallels Found Between Solar Activity And Hurricane Development”

  1. Posa

    Can you show other examples of Atlantic hurricanes being “fed” by solar storms? When you have that data get back to us… otherwise. Please. Space weather has become the Right-wing mirror image of the CO2 mythology on the Left. Both are wrong and unproven…

    1. Jim

      Sorry, wrong person replying, but there are interesting coralations on space and Earth weather. Remember, we are 8 minutes from a variable star, our orbit is not circular, and the systems here are dependant on inputs from the star, no star, icecubes here. So the star has an input variable for the survival of humans here. Enough to create warm zones where humans can survive. It’s not the 1 of many bigger inputs, but the big one. No star, no Earth, humans toast.

    2. Anthony Power

      Goofball … nobody said it was a done deal !

      “An important and meaningful field of research, in my opinion”

      Try not to be so dismissive or are you just a

      a person who is intolerant toward those holding different opinions

      1. Posa

        Sorry Anthony. I’m an evidence driven person. You’re not. But you’re very good at hand-waving and bluster.

        When you have some evidence that Katrina, or Andrew, or any other Atlantic hurricane was “fed” by solar flares, I’ll be happy to see it. Not a hard thing to do.

        But, of course, neither you now SnowFan can produce such evidence. Am I supposed to be “open-minded” about a half-baked claim with absolutely no effort made to corroborate ….

        1. BB

          Why does he need to present this evidence now? He proposed a possible hypothesis based on a recent observation and correlation. Why are you triggered by this?

      2. Ric Werme

        Talk about being dismissive….

        Let’s see adequate documentation! There’s lots of opportunities to fool oneself, and their must be a lot of solar storms out there to correlate with tropical cyclones then – did they all/some/few develop then?

        Hey, how about looking for the effect of solar activity on the Gulf Stream?

  2. mwhite

    You may like the chart 1 minute 12 into this video

    1. mwhite

      An hour long, but worth watching

      “CLIMATE FORCING | Our Future is Cold”

      1. Bob Weber

        There are so many holes in his first ten minutes it’s not funny.

        The thermosphere doesn’t warm the ocean, as heat rises, not falls.

        The big TSI failures are the UN IPCC’s and Ben Davidson’s.

        He used an obsolete TSI reconstruction, not the latest for one thing.

        It’s not going to be cold all the time in the future as the sun will warm at and after the cycle peaks again like last time, even with a low cycle. Where is any mention of that? It’s going to be colder mainly in the winter and early spring until TSI rises again.

        I can show you how and why TSI is the main climate driver, he can’t.

        The solar cycle influence of TSI on the ocean rules the climate.

        Furthermore, we are not in a grand solar minimum.

        It should concern people a lot more that this guy gets a free pass and we’re all supposed to take him seriously without question.

  3. rah

    Though I won’t dispute the possibility of solar activity having an effect on the formation and development of tropical cyclones I will say I find it highly doubtful that Dorian was truly a CAT V.
    No doubt it was one bad ass storm but no way it was even close to equaling the 2nd strongest hurricanes on record as claimed. The simple fact is that the remote sensing technology that NOAA is using has been inflating hurricane wind speeds relative to the Saffir Simpson criteria of one minute sustained from an unmasked surface station taken 10 meters above the surface. This is not me reiterating the opinion of others. I have monitored in real time surface station and buoy data several times during different storms and it always seem to end up the surface station data is about 1/2 of a Saffir Simpson category lower than the highest measurements one can find from surface stations.

    This time there were no operational surface station or buoy data I could find located right in the path of the eye wall during the time Dorian was at it’s maximum strength. But based on past evidence and the damage I am seeing in the Bahamas I would bet Dorian was a solid CAT IV based on the old criteria.

  4. rah

    excuse me. Surface station data is about 1/2 a category lower than that being reported.

  5. rah

    Back on August 12th I sent out this e-mail to family and friends based on info from Joe Bastardi and others.
    “Mon, Aug 12, 2019 3:48 pm
    Though the ACE index is only at 29% of average for the North Atlantic Basin where our hurricanes form as I write this, things are changing and we can expect the tropics to start firing up in a couple weeks. The dust and dry air over the Atlantic Basin MDR is dissipating. The weak Modoki El Nino is gone and the ENSO is now neutral and the MJO is moving towards sector 2. All of these point to conditions much more conducive for Tropical Storm development in the Atlantic Basin. So it looks like there is a good chance the 2nd half of the Atlantic Hurricane season is going to be quite active. ”

    Note that there were plenty of meteorological indicators that were emerging that indicated where the Atlantic hurricane season was going.
    When it can be shown that a component of space weather is an indicator of weather to come, and can be used as a weather forecast tool, then you’ll have me fully aboard. Until then I encourage the research that is being done in that field.

  6. rah

    BTW Judith Curry discusses solar effects on ENSO here.

  7. Léon Driessen

    Recently I saw a video that mentioned the sun causing hurricanes. I don’t which one it was, but it came from ‘Space Weather News’
    In this one they also mention this:

  8. Bob Weber

    I looked into this also back in 2013/14 but came to a different conclusion ultimately.

    The electrons and hurricanes are indirectly related, both related to a third thing not mentioned, so it’s a spurious result.

    By what mechanism does space weather influence the ocean a year later?

  9. Weekly Climate and Energy News Roundup #376 | Watts Up With That?
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  11. Thomas Wolf

    Might be worthy to look at the Electrical Model in which it is not at all “surprising” that solar activity and earth’s weather phenomena are closely correlated. The connection is electrical currents.

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